[media] tm6000: fix comments coding style issue in group of files

This is a patch to the
tm6000-cards.c
tm6000-core.c
tm6000-dvb.c
tm6000-i2c.c
tm6000-input.c
tm6000-regs.h
tm6000-stds.c
tm6000-usb-isoc.h
tm6000.h
files that fixed up a comments warnings found by the checkpatch.pl tools.

Signed-off-by: Ruslan Pisarev <ruslan@rpisarev.org.ua>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>